Assumptions are the lowest form of knowledge. Sometimes we fester on possibilities, especially when it comes to people. Sometimes we will assume someone is harboring negative intentions towards us without even bothering to get the facts. Our pride and our bad habit of nurturing past offenses can cause us to misidentify who are our enemies and friends. As a result, we build ourselves up through festering which in turn all we're really doing is getting pre-agitated (yes I made a word up lol) and tense. In actuality though all this does is make things worse. Many of us take things further and plan a method of revenge against something that hasn't even happened because we've allowed ourselves to get hyped up over an assumption. We try to get them before they can get us.
Instead of confronting our family member, friend, or coworker in the beginning when offense first takes root, we will harbor resentment until it becomes a bad habit. Then we explode and out comes the words and actions we later wish we could take back. Petty situations then turn into broken hearts and ruined opportunities for greatness.